Intent of specifications



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INTERLOCK, CAB LIFT TO PARKING BRAKE


The cab lift safety system shall be interlocked to the parking brake.  The cab tilt mechanism shall be active only when the parking brake is set and the ignition switch is in the on position.  If the parking brake is released, the cab tilt mechanism shall be disabled.

GRILLE


A bright finished aluminum mesh grille screen, inserted behind a formed bright finished grille surround, shall be provided on the front center of the cab, and shall serve as an air intake to the radiator.

TRIM BAND (cab face)


A 10.00" band of 22 gauge polished stainless steel trim shall be installed across the front of the cab, from door hinge to door hinge.  The trim band shall be centered on the head lights and applied with two-sided tape.  A .625" self adhesive trim strip shall be applied around the perimeter of the trim band.

MIRRORS


A polished mirror, 7.62" x 13.50" flat glass and a 6.62" x 6.25" convex glass, shall be mounted on each side of the front cab doors.  Driver and passenger side mirrors shall be heated and adjustable with remote control convenient to the driver.

DOORS


To enhance entry and egress to the cab, the forward cab doors shall be a minimum of 43.59" wide x 76.46" high.  The crew cab door shall be located on the side of the cab and shall be constructed in the same manner as the forward cab doors.  The crew cab door shall measure a minimum of 37.87" wide x 85.50" high.

The forward cab and crew cab doors shall be constructed of extruded aluminum with a nominal material thickness of .125".  The exterior door skins shall be constructed from .090" aluminum.

Each forward cab and crew cab entry door shall contain a roll-down tempered glass window.  The forward cab door windows shall include a 7.50" high x 10.00" wide drop area at the front to enhance visibility.

A customized, vertical, pull-down type door handle shall be provided on the exterior of each cab door.  The exterior handle shall be designed specifically for the fire service to prevent accidental activation, and shall provide 4.00" wide x 2.00" deep hand clearance for ease of use with heavy gloved hands.  Each door shall also be provided with an interior flush, open style paddle handle that shall be readily operable from fore and aft positions, and be designed to prevent accidental activation.  The interior handles shall provide 4.00" wide x 1.25" deep hand clearance for ease of use with heavy gloved hands.

The cab doors shall be provided with both interior (rotary knob) and exterior (keyed) locks exceeding FMVSS standards.  The locks shall be capable of activating when the doors are open or closed.  The doors shall remain locked if locks are activated when the doors are opened, then closed.

A full length, heavy duty, stainless steel, piano-type hinge with a .38" pin and 11-gauge leaf shall be provided on all cab doors.  There shall be double automotive-type rubber seals around the perimeter of the door framing and door edges to ensure a weather-tight fit.

The inner cab door panels shall be constructed of brushed stainless steel and be removable without requiring the disconnection of door and window mechanisms.  A dark grey vacuum formed ABS panel shall house the window switches and shall mold into the upper sill of the door panel.

The cab steps at each cab door location shall be located inside the cab doors to protect the steps from weather elements.


CAB DOOR SCUFFPLATES


Stainless steel door panels on all three cab doors.

ELECTRIC WINDOW CONTROLS


Each cab entry door shall be equipped with an electrically operated window.  A window control panel shall be ergonomically molded into the armrest of the door panel within easy reach of the respective occupant.  Each switch shall allow intermittent or auto down operation for ease of use. Auto down operation shall be actuated by holding the window down switch for approximately 1/2 second.  The driver control panel shall contain a control switch for each cab door's window.  All other door control panels shall contain a single switch to operate the window within that door.

ELECTRIC CAB DOOR LOCKS


The front driver and passenger doors shall have a door lock master switch (custom designed rotary lock knob) built into the interior door latch that shall control all front and rear side exit door locks.  Each rear cab door shall have its own lock control.  Each door shall have a keyed exterior lock mechanism built into the door handle assembly.

There shall be one (1) concealed switch on the exterior of the cab, located under the front full width service access panel, that operates the cab door locks.

The lock system shall include two (2) key FOBs that allow for keyless entry into the vehicle.  The key FOB system shall use code hopping technology for high security and be FCC part 15 compliant.

KEY PAD FOR ELECTRIC DOOR LOCKS


For improved convenience, the cab door locks shall include a keypad entry system to provide complete keyless entry to the cab.  There shall be two (2) keypads provided, located one each side of the cab behind the front cab doors.  The keypads shall include visual and audio feedback to confirm activation and acknowledge correct entry code.  For enhanced night time use, the keypads shall be lighted.  For increased security, the system shall allow over 3000 possible code combinations.

CAB STEPS


The forward cab and crew cab access steps shall be a full size two (2)-step design to provide largest possible stepping surfaces for safe ingress and egress.  The bottom steps shall be designed with a grip pattern punched into bright aluminum treadplate material, providing support, slip resistance and drainage.  The bottom steps shall be a bolt-in design to minimize repair costs in the event of an accident.  The forward cab steps shall be a minimum 31.00" wide and the crew cab step shall be 37.75" wide, with an 8.00" minimum depth.  The inside cab steps shall not exceed 18.00" in height and be limited to two (2) steps.  Due to safety concerns, three (3) step entrance designs shall not be acceptable.  A slip-resistant handrail shall be provided adjacent to all cab door openings to assist during ingress and egress to and from the cab.

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